dali-toolkit/internal/texture-manager/texture-manager-impl.cpp

   1 /*
   2  * Copyright (c) 2023 Samsung Electronics Co., Ltd.
   3  *
   4  * Licensed under the Apache License, Version 2.0 (the "License");
   5  * you may not use this file except in compliance with the License.
   6  * You may obtain a copy of the License at
   7  *
   8  * http://www.apache.org/licenses/LICENSE-2.0
   9  *
  10  * Unless required by applicable law or agreed to in writing, software
  11  * distributed under the License is distributed on an "AS IS" BASIS,
  12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  13  * See the License for the specific language governing permissions and
  14  * limitations under the License.
  15  *
  16  */
  17
  18 // CLASS HEADER
  19 #include <dali-toolkit/internal/texture-manager/texture-manager-impl.h>
  20
  21 // EXTERNAL HEADERS
  22 #include <dali/devel-api/adaptor-framework/image-loading.h>
  23 #include <dali/devel-api/adaptor-framework/pixel-buffer.h>
  24 #include <dali/integration-api/adaptor-framework/adaptor.h>
  25 #include <dali/integration-api/debug.h>
  26 #include <dali/integration-api/trace.h>
  27 #include <dali/public-api/rendering/geometry.h>
  28
  29 // INTERNAL HEADERS
  30 #include <dali-toolkit/internal/texture-manager/texture-async-loading-helper.h>
  31 #include <dali-toolkit/internal/texture-manager/texture-cache-manager.h>
  32 #include <dali-toolkit/internal/visuals/image-atlas-manager.h>
  33 #include <dali-toolkit/internal/visuals/rendering-addon.h>
  34
  35 namespace
  36 {
  37 constexpr auto INITIAL_HASH_NUMBER = size_t{0u};
  38
  39 constexpr auto TEXTURE_INDEX      = 0u; ///< The Index for texture
  40 constexpr auto MASK_TEXTURE_INDEX = 1u; ///< The Index for mask texture
  41
  42 DALI_INIT_TRACE_FILTER(gTraceFilter, DALI_TRACE_IMAGE_PERFORMANCE_MARKER, false);
  43 } // namespace
  44
  45 namespace Dali
  46 {
  47 namespace Toolkit
  48 {
  49 namespace Internal
  50 {
  51 #ifdef DEBUG_ENABLED
  52 // Define logfilter Internal namespace level so other files (e.g. texture-cache-manager.cpp) can also use this filter.
  53 Debug::Filter* gTextureManagerLogFilter = Debug::Filter::New(Debug::NoLogging, false, "LOG_TEXTURE_MANAGER");
  54
  55 // clang-format off
  56 #define GET_LOAD_STATE_STRING(loadState) \
  57   loadState == TextureManagerType::LoadState::NOT_STARTED      ? "NOT_STARTED"      : \
  58   loadState == TextureManagerType::LoadState::LOADING          ? "LOADING"          : \
  59   loadState == TextureManagerType::LoadState::LOAD_FINISHED    ? "LOAD_FINISHED"    : \
  60   loadState == TextureManagerType::LoadState::WAITING_FOR_MASK ? "WAITING_FOR_MASK" : \
  61   loadState == TextureManagerType::LoadState::MASK_APPLYING    ? "MASK_APPLYING"    : \
  62   loadState == TextureManagerType::LoadState::MASK_APPLIED     ? "MASK_APPLIED"     : \
  63   loadState == TextureManagerType::LoadState::UPLOADED         ? "UPLOADED"         : \
  64   loadState == TextureManagerType::LoadState::CANCELLED        ? "CANCELLED"        : \
  65   loadState == TextureManagerType::LoadState::MASK_CANCELLED   ? "MASK_CANCELLED"   : \
  66   loadState == TextureManagerType::LoadState::LOAD_FAILED      ? "LOAD_FAILED"      : \
  67                                                                  "Unknown"
  68 // clang-format on
  69 #endif
  70
  71 namespace
  72 {
  73 const Vector4 FULL_ATLAS_RECT(0.0f, 0.0f, 1.0f, 1.0f); ///< UV Rectangle that covers the full Texture
  74
  75 void PreMultiply(Devel::PixelBuffer pixelBuffer, TextureManager::MultiplyOnLoad& preMultiplyOnLoad)
  76 {
  77   if(Pixel::HasAlpha(pixelBuffer.GetPixelFormat()))
  78   {
  79     if(preMultiplyOnLoad == TextureManager::MultiplyOnLoad::MULTIPLY_ON_LOAD)
  80     {
  81       pixelBuffer.MultiplyColorByAlpha();
  82     }
  83   }
  84   else
  85   {
  86     preMultiplyOnLoad = TextureManager::MultiplyOnLoad::LOAD_WITHOUT_MULTIPLY;
  87   }
  88 }
  89
  90 } // Anonymous namespace
  91
  92 TextureManager::MaskingData::MaskingData()
  93 : mAlphaMaskUrl(),
  94   mAlphaMaskId(INVALID_TEXTURE_ID),
  95   mContentScaleFactor(1.0f),
  96   mCropToMask(true),
  97   mPreappliedMasking(true),
  98   mMaskImageLoadingFailed(false)
  99 {
 100 }
 101
 102 TextureManager::TextureManager(bool loadYuvPlanes)
 103 : mTextureCacheManager(),
 104   mAsyncLoader(std::unique_ptr<TextureAsyncLoadingHelper>(new TextureAsyncLoadingHelper(*this))),
 105   mLifecycleObservers(),
 106   mLoadQueue(),
 107   mLoadingQueueTextureId(INVALID_TEXTURE_ID),
 108   mRemoveQueue(),
 109   mLoadYuvPlanes(loadYuvPlanes),
 110   mRemoveProcessorRegistered(false)
 111 {
 112   // Initialize the AddOn
 113   RenderingAddOn::Get();
 114 }
 115
 116 TextureManager::~TextureManager()
 117 {
 118   if(mRemoveProcessorRegistered && Adaptor::IsAvailable())
 119   {
 120     Adaptor::Get().UnregisterProcessor(*this, true);
 121     mRemoveProcessorRegistered = false;
 122   }
 123
 124   for(auto iter = mLifecycleObservers.Begin(), endIter = mLifecycleObservers.End(); iter != endIter; ++iter)
 125   {
 126     (*iter)->TextureManagerDestroyed();
 127   }
 128 }
 129
 130 TextureSet TextureManager::LoadAnimatedImageTexture(
 131   const VisualUrl&                url,
 132   Dali::AnimatedImageLoading      animatedImageLoading,
 133   const uint32_t                  frameIndex,
 134   TextureManager::TextureId&      textureId,
 135   MaskingDataPointer&             maskInfo,
 136   const Dali::ImageDimensions&    desiredSize,
 137   const Dali::FittingMode::Type   fittingMode,
 138   const Dali::SamplingMode::Type  samplingMode,
 139   const bool                      synchronousLoading,
 140   TextureUploadObserver*          textureObserver,
 141   TextureManager::MultiplyOnLoad& preMultiplyOnLoad)
 142 {
 143   TextureSet textureSet;
 144
 145   if(synchronousLoading)
 146   {
 147     Devel::PixelBuffer pixelBuffer;
 148     if(animatedImageLoading)
 149     {
 150       pixelBuffer = animatedImageLoading.LoadFrame(frameIndex, desiredSize, fittingMode, samplingMode);
 151     }
 152     if(!pixelBuffer)
 153     {
 154       DALI_LOG_ERROR("TextureManager::LoadAnimatedImageTexture: Synchronous loading is failed\n");
 155     }
 156     else
 157     {
 158       Texture maskTexture;
 159       if(maskInfo && maskInfo->mAlphaMaskUrl.IsValid())
 160       {
 161         Devel::PixelBuffer maskPixelBuffer = LoadImageFromFile(maskInfo->mAlphaMaskUrl.GetUrl(), desiredSize, fittingMode, samplingMode, true);
 162         if(maskPixelBuffer)
 163         {
 164           if(!maskInfo->mPreappliedMasking)
 165           {
 166             PixelData maskPixelData = Devel::PixelBuffer::Convert(maskPixelBuffer); // takes ownership of buffer
 167             maskTexture             = Texture::New(Dali::TextureType::TEXTURE_2D, maskPixelData.GetPixelFormat(), maskPixelData.GetWidth(), maskPixelData.GetHeight());
 168             maskTexture.Upload(maskPixelData);
 169           }
 170           else
 171           {
 172             pixelBuffer.ApplyMask(maskPixelBuffer, maskInfo->mContentScaleFactor, maskInfo->mCropToMask);
 173           }
 174         }
 175         else
 176         {
 177           DALI_LOG_ERROR("TextureManager::LoadAnimatedImageTexture: Synchronous mask image loading is failed\n");
 178         }
 179       }
 180
 181       if(preMultiplyOnLoad == TextureManager::MultiplyOnLoad::MULTIPLY_ON_LOAD)
 182       {
 183         PreMultiply(pixelBuffer, preMultiplyOnLoad);
 184       }
 185
 186       PixelData pixelData = Devel::PixelBuffer::Convert(pixelBuffer); // takes ownership of buffer
 187       if(!textureSet)
 188       {
 189         Texture texture = Texture::New(Dali::TextureType::TEXTURE_2D, pixelData.GetPixelFormat(), pixelData.GetWidth(), pixelData.GetHeight());
 190         texture.Upload(pixelData);
 191         textureSet = TextureSet::New();
 192         textureSet.SetTexture(TEXTURE_INDEX, texture);
 193         if(maskTexture)
 194         {
 195           textureSet.SetTexture(MASK_TEXTURE_INDEX, maskTexture);
 196         }
 197       }
 198     }
 199   }
 200   else
 201   {
 202     TextureId alphaMaskId        = INVALID_TEXTURE_ID;
 203     float     contentScaleFactor = 1.0f;
 204     bool      cropToMask         = false;
 205     if(maskInfo && maskInfo->mAlphaMaskUrl.IsValid())
 206     {
 207       maskInfo->mAlphaMaskId = RequestMaskLoad(maskInfo->mAlphaMaskUrl, maskInfo->mPreappliedMasking ? TextureManager::StorageType::KEEP_PIXEL_BUFFER : TextureManager::StorageType::KEEP_TEXTURE);
 208       alphaMaskId            = maskInfo->mAlphaMaskId;
 209       if(maskInfo->mPreappliedMasking)
 210       {
 211         contentScaleFactor = maskInfo->mContentScaleFactor;
 212         cropToMask         = maskInfo->mCropToMask;
 213       }
 214     }
 215
 216     textureId = RequestLoadInternal(url, alphaMaskId, textureId, contentScaleFactor, desiredSize, fittingMode, samplingMode, cropToMask, TextureManager::StorageType::UPLOAD_TO_TEXTURE, textureObserver, true, TextureManager::ReloadPolicy::CACHED, preMultiplyOnLoad, animatedImageLoading, frameIndex, false);
 217
 218     TextureManager::LoadState loadState = mTextureCacheManager.GetTextureStateInternal(textureId);
 219     if(loadState == TextureManager::LoadState::UPLOADED)
 220     {
 221       // LoadComplete has already been called - keep the same texture set
 222       textureSet = GetTextureSet(textureId);
 223     }
 224   }
 225
 226   return textureSet;
 227 }
 228
 229 Devel::PixelBuffer TextureManager::LoadPixelBuffer(
 230   const VisualUrl&                url,
 231   const Dali::ImageDimensions&    desiredSize,
 232   const Dali::FittingMode::Type   fittingMode,
 233   const Dali::SamplingMode::Type  samplingMode,
 234   const bool                      synchronousLoading,
 235   TextureUploadObserver*          textureObserver,
 236   const bool                      orientationCorrection,
 237   TextureManager::MultiplyOnLoad& preMultiplyOnLoad)
 238 {
 239   Devel::PixelBuffer pixelBuffer;
 240   if(synchronousLoading)
 241   {
 242     if(url.IsValid())
 243     {
 244       if(url.IsBufferResource())
 245       {
 246         const EncodedImageBuffer& encodedImageBuffer = mTextureCacheManager.GetEncodedImageBuffer(url);
 247         if(encodedImageBuffer)
 248         {
 249           pixelBuffer = LoadImageFromBuffer(encodedImageBuffer.GetRawBuffer(), desiredSize, fittingMode, samplingMode, orientationCorrection);
 250         }
 251       }
 252       else
 253       {
 254         pixelBuffer = LoadImageFromFile(url.GetUrl(), desiredSize, fittingMode, samplingMode, orientationCorrection);
 255       }
 256       if(pixelBuffer && preMultiplyOnLoad == TextureManager::MultiplyOnLoad::MULTIPLY_ON_LOAD)
 257       {
 258         PreMultiply(pixelBuffer, preMultiplyOnLoad);
 259       }
 260     }
 261   }
 262   else
 263   {
 264     RequestLoadInternal(url, INVALID_TEXTURE_ID, INVALID_TEXTURE_ID, 1.0f, desiredSize, fittingMode, samplingMode, false, TextureManager::StorageType::RETURN_PIXEL_BUFFER, textureObserver, orientationCorrection, TextureManager::ReloadPolicy::FORCED, preMultiplyOnLoad, Dali::AnimatedImageLoading(), 0u, false);
 265   }
 266
 267   return pixelBuffer;
 268 }
 269
 270 TextureSet TextureManager::LoadTexture(
 271   const VisualUrl&                   url,
 272   const Dali::ImageDimensions&       desiredSize,
 273   const Dali::FittingMode::Type      fittingMode,
 274   const Dali::SamplingMode::Type     samplingMode,
 275   MaskingDataPointer&                maskInfo,
 276   const bool                         synchronousLoading,
 277   TextureManager::TextureId&         textureId,
 278   Vector4&                           textureRect,
 279   Dali::ImageDimensions&             textureRectSize,
 280   bool&                              atlasingStatus,
 281   bool&                              loadingStatus,
 282   TextureUploadObserver*             textureObserver,
 283   AtlasUploadObserver*               atlasObserver,
 284   ImageAtlasManagerPtr               imageAtlasManager,
 285   const bool                         orientationCorrection,
 286   const TextureManager::ReloadPolicy reloadPolicy,
 287   TextureManager::MultiplyOnLoad&    preMultiplyOnLoad)
 288 {
 289   TextureSet textureSet;
 290
 291   loadingStatus = false;
 292   textureRect   = FULL_ATLAS_RECT;
 293
 294   if(VisualUrl::TEXTURE == url.GetProtocolType())
 295   {
 296     std::string location = url.GetLocation();
 297     if(location.size() > 0u)
 298     {
 299       TextureId id                  = std::stoi(location);
 300       auto      externalTextureInfo = mTextureCacheManager.GetExternalTextureInfo(id);
 301       if(externalTextureInfo.textureSet)
 302       {
 303         if(preMultiplyOnLoad == TextureManager::MultiplyOnLoad::MULTIPLY_ON_LOAD)
 304         {
 305           // Change preMultiplyOnLoad value so make caller determine to preMultiplyAlpha or not.
 306           // TODO : Should we seperate input and output value?
 307           preMultiplyOnLoad = externalTextureInfo.preMultiplied ? TextureManager::MultiplyOnLoad::MULTIPLY_ON_LOAD : TextureManager::MultiplyOnLoad::LOAD_WITHOUT_MULTIPLY;
 308         }
 309
 310         TextureId alphaMaskId = INVALID_TEXTURE_ID;
 311         if(maskInfo && maskInfo->mAlphaMaskUrl.IsValid())
 312         {
 313           maskInfo->mAlphaMaskId = RequestMaskLoad(maskInfo->mAlphaMaskUrl, TextureManager::StorageType::KEEP_TEXTURE, synchronousLoading);
 314           alphaMaskId            = maskInfo->mAlphaMaskId;
 315
 316           // Create new textureId. this textureId is not same as location
 317           textureId = RequestLoad(url, alphaMaskId, textureId, 1.0f, desiredSize, fittingMode, samplingMode, false, textureObserver, orientationCorrection, reloadPolicy, preMultiplyOnLoad, synchronousLoading);
 318
 319           TextureManager::LoadState loadState = mTextureCacheManager.GetTextureStateInternal(textureId);
 320           if(loadState == TextureManager::LoadState::UPLOADED)
 321           {
 322             textureSet = GetTextureSet(textureId);
 323           }
 324         }
 325         else
 326         {
 327           // TextureId is same as location
 328           textureId = id;
 329
 330           textureSet = TextureSet::New();
 331           textureSet.SetTexture(TEXTURE_INDEX, externalTextureInfo.textureSet.GetTexture(TEXTURE_INDEX));
 332         }
 333       }
 334     }
 335   }
 336   else
 337   {
 338     // For Atlas
 339     if(synchronousLoading && atlasingStatus)
 340     {
 341       const bool synchronousAtlasAvaliable = (desiredSize != ImageDimensions() || url.IsLocalResource()) ? imageAtlasManager->CheckAtlasAvailable(url, desiredSize)
 342                                                                                                          : false;
 343       if(synchronousAtlasAvaliable)
 344       {
 345         std::vector<Devel::PixelBuffer> pixelBuffers;
 346         LoadImageSynchronously(url, desiredSize, fittingMode, samplingMode, orientationCorrection, false, pixelBuffers);
 347
 348         if(!pixelBuffers.empty() && maskInfo && maskInfo->mAlphaMaskUrl.IsValid())
 349         {
 350           std::vector<Devel::PixelBuffer> maskPixelBuffers;
 351           LoadImageSynchronously(maskInfo->mAlphaMaskUrl, ImageDimensions(), FittingMode::SCALE_TO_FILL, SamplingMode::NO_FILTER, true, false, maskPixelBuffers);
 352           if(!maskPixelBuffers.empty())
 353           {
 354             pixelBuffers[0].ApplyMask(maskPixelBuffers[0], maskInfo->mContentScaleFactor, maskInfo->mCropToMask);
 355           }
 356         }
 357
 358         PixelData data;
 359         if(!pixelBuffers.empty())
 360         {
 361           PreMultiply(pixelBuffers[0], preMultiplyOnLoad);
 362           data = Devel::PixelBuffer::Convert(pixelBuffers[0]); // takes ownership of buffer
 363
 364           if(data)
 365           {
 366             textureSet = imageAtlasManager->Add(textureRect, data);
 367             if(textureSet)
 368             {
 369               textureRectSize.SetWidth(data.GetWidth());
 370               textureRectSize.SetHeight(data.GetHeight());
 371             }
 372           }
 373           else
 374           {
 375             DALI_LOG_ERROR("TextureManager::LoadTexture: Synchronous Texture loading with atlasing is failed.\n");
 376           }
 377         }
 378         if(!textureSet)
 379         {
 380           atlasingStatus = false;
 381         }
 382       }
 383     }
 384
 385     if(!textureSet)
 386     {
 387       loadingStatus = true;
 388       // Atlas manager can chage desired size when it is set by 0,0.
 389       // We should store into textureRectSize only if atlasing successed.
 390       // So copy inputed desiredSize, and replace value into textureRectSize only if atlasing success.
 391       Dali::ImageDimensions atlasDesiredSize = desiredSize;
 392       if(atlasingStatus)
 393       {
 394         if(url.IsBufferResource())
 395         {
 396           const EncodedImageBuffer& encodedImageBuffer = GetEncodedImageBuffer(url.GetUrl());
 397           if(encodedImageBuffer)
 398           {
 399             textureSet = imageAtlasManager->Add(textureRect, encodedImageBuffer, desiredSize, fittingMode, true, atlasObserver);
 400           }
 401         }
 402         else
 403         {
 404           textureSet = imageAtlasManager->Add(textureRect, url, atlasDesiredSize, fittingMode, true, atlasObserver);
 405         }
 406       }
 407       if(!textureSet) // big image, no atlasing or atlasing failed
 408       {
 409         atlasingStatus = false;
 410
 411         TextureId alphaMaskId        = INVALID_TEXTURE_ID;
 412         float     contentScaleFactor = 1.0f;
 413         bool      cropToMask         = false;
 414         if(maskInfo && maskInfo->mAlphaMaskUrl.IsValid())
 415         {
 416           maskInfo->mAlphaMaskId = RequestMaskLoad(maskInfo->mAlphaMaskUrl, maskInfo->mPreappliedMasking ? TextureManager::StorageType::KEEP_PIXEL_BUFFER : TextureManager::StorageType::KEEP_TEXTURE, synchronousLoading);
 417           alphaMaskId            = maskInfo->mAlphaMaskId;
 418           if(maskInfo && maskInfo->mPreappliedMasking)
 419           {
 420             contentScaleFactor = maskInfo->mContentScaleFactor;
 421             cropToMask         = maskInfo->mCropToMask;
 422           }
 423         }
 424
 425         textureId = RequestLoad(
 426           url,
 427           alphaMaskId,
 428           textureId,
 429           contentScaleFactor,
 430           desiredSize,
 431           fittingMode,
 432           samplingMode,
 433           cropToMask,
 434           textureObserver,
 435           orientationCorrection,
 436           reloadPolicy,
 437           preMultiplyOnLoad,
 438           synchronousLoading);
 439
 440         TextureManager::LoadState loadState = mTextureCacheManager.GetTextureStateInternal(textureId);
 441         if(loadState == TextureManager::LoadState::UPLOADED)
 442         {
 443           // LoadComplete has already been called - keep the same texture set
 444           textureSet = GetTextureSet(textureId);
 445         }
 446
 447         // If we are loading the texture, or waiting for the ready signal handler to complete, inform
 448         // caller that they need to wait.
 449         loadingStatus = (loadState == TextureManager::LoadState::LOADING ||
 450                          loadState == TextureManager::LoadState::WAITING_FOR_MASK ||
 451                          loadState == TextureManager::LoadState::MASK_APPLYING ||
 452                          loadState == TextureManager::LoadState::MASK_APPLIED ||
 453                          loadState == TextureManager::LoadState::NOT_STARTED ||
 454                          mLoadingQueueTextureId != INVALID_TEXTURE_ID);
 455       }
 456       else
 457       {
 458         textureRectSize = atlasDesiredSize;
 459       }
 460     }
 461   }
 462
 463   if(synchronousLoading)
 464   {
 465     loadingStatus = false;
 466   }
 467
 468   return textureSet;
 469 }
 470
 471 TextureManager::TextureId TextureManager::RequestLoad(
 472   const VisualUrl&                   url,
 473   const ImageDimensions&             desiredSize,
 474   const Dali::FittingMode::Type      fittingMode,
 475   const Dali::SamplingMode::Type     samplingMode,
 476   TextureUploadObserver*             observer,
 477   const bool                         orientationCorrection,
 478   const TextureManager::ReloadPolicy reloadPolicy,
 479   TextureManager::MultiplyOnLoad&    preMultiplyOnLoad,
 480   const bool                         synchronousLoading)
 481 {
 482   return RequestLoadInternal(url, INVALID_TEXTURE_ID, INVALID_TEXTURE_ID, 1.0f, desiredSize, fittingMode, samplingMode, false, TextureManager::StorageType::UPLOAD_TO_TEXTURE, observer, orientationCorrection, reloadPolicy, preMultiplyOnLoad, Dali::AnimatedImageLoading(), 0u, synchronousLoading);
 483 }
 484
 485 TextureManager::TextureId TextureManager::RequestLoad(
 486   const VisualUrl&                   url,
 487   const TextureManager::TextureId    maskTextureId,
 488   const TextureManager::TextureId    previousTextureId,
 489   const float                        contentScale,
 490   const Dali::ImageDimensions&       desiredSize,
 491   const Dali::FittingMode::Type      fittingMode,
 492   const Dali::SamplingMode::Type     samplingMode,
 493   const bool                         cropToMask,
 494   TextureUploadObserver*             observer,
 495   const bool                         orientationCorrection,
 496   const TextureManager::ReloadPolicy reloadPolicy,
 497   TextureManager::MultiplyOnLoad&    preMultiplyOnLoad,
 498   const bool                         synchronousLoading)
 499 {
 500   return RequestLoadInternal(url, maskTextureId, previousTextureId, contentScale, desiredSize, fittingMode, samplingMode, cropToMask, TextureManager::StorageType::UPLOAD_TO_TEXTURE, observer, orientationCorrection, reloadPolicy, preMultiplyOnLoad, Dali::AnimatedImageLoading(), 0u, synchronousLoading);
 501 }
 502
 503 TextureManager::TextureId TextureManager::RequestMaskLoad(
 504   const VisualUrl&                  maskUrl,
 505   const TextureManager::StorageType storageType,
 506   const bool                        synchronousLoading)
 507 {
 508   // Use the normal load procedure to get the alpha mask.
 509   auto preMultiply = TextureManager::MultiplyOnLoad::LOAD_WITHOUT_MULTIPLY;
 510   return RequestLoadInternal(maskUrl, INVALID_TEXTURE_ID, INVALID_TEXTURE_ID, 1.0f, ImageDimensions(), Dali::FittingMode::SCALE_TO_FILL, Dali::SamplingMode::NO_FILTER, false, storageType, NULL, true, TextureManager::ReloadPolicy::CACHED, preMultiply, Dali::AnimatedImageLoading(), 0u, synchronousLoading);
 511 }
 512
 513 TextureManager::TextureId TextureManager::RequestLoadInternal(
 514   const VisualUrl&                   url,
 515   const TextureManager::TextureId    maskTextureId,
 516   const TextureManager::TextureId    previousTextureId,
 517   const float                        contentScale,
 518   const Dali::ImageDimensions&       desiredSize,
 519   const Dali::FittingMode::Type      fittingMode,
 520   const Dali::SamplingMode::Type     samplingMode,
 521   const bool                         cropToMask,
 522   const TextureManager::StorageType  storageType,
 523   TextureUploadObserver*             observer,
 524   const bool                         orientationCorrection,
 525   const TextureManager::ReloadPolicy reloadPolicy,
 526   TextureManager::MultiplyOnLoad&    preMultiplyOnLoad,
 527   Dali::AnimatedImageLoading         animatedImageLoading,
 528   const uint32_t                     frameIndex,
 529   const bool                         synchronousLoading)
 530 {
 531   TextureHash       textureHash   = INITIAL_HASH_NUMBER;
 532   TextureCacheIndex cacheIndex    = INVALID_CACHE_INDEX;
 533   bool              loadYuvPlanes = (mLoadYuvPlanes && maskTextureId == INVALID_TEXTURE_ID && storageType == TextureManager::StorageType::UPLOAD_TO_TEXTURE);
 534
 535   if(storageType != TextureManager::StorageType::RETURN_PIXEL_BUFFER)
 536   {
 537     textureHash = mTextureCacheManager.GenerateHash(url, desiredSize, fittingMode, samplingMode, maskTextureId, cropToMask, frameIndex);
 538
 539     // Look up the texture by hash. Note: The extra parameters are used in case of a hash collision.
 540     cacheIndex = mTextureCacheManager.FindCachedTexture(textureHash, url, desiredSize, fittingMode, samplingMode, storageType, maskTextureId, cropToMask, preMultiplyOnLoad, (animatedImageLoading) ? true : false, frameIndex);
 541   }
 542
 543   TextureManager::TextureId textureId = INVALID_TEXTURE_ID;
 544   // Check if the requested Texture exists in the cache.
 545   if(cacheIndex != INVALID_CACHE_INDEX)
 546   {
 547     if(TextureManager::ReloadPolicy::CACHED == reloadPolicy || TextureManager::INVALID_TEXTURE_ID == previousTextureId)
 548     {
 549       // Mark this texture being used by another client resource, or Reload forced without request load before.
 550       // Forced reload which have current texture before, would replace the current texture.
 551       // without the need for incrementing the reference count.
 552       ++(mTextureCacheManager[cacheIndex].referenceCount);
 553     }
 554     textureId = mTextureCacheManager[cacheIndex].textureId;
 555
 556     // Update preMultiplyOnLoad value. It should be changed according to preMultiplied value of the cached info.
 557     preMultiplyOnLoad = mTextureCacheManager[cacheIndex].preMultiplied ? TextureManager::MultiplyOnLoad::MULTIPLY_ON_LOAD : TextureManager::MultiplyOnLoad::LOAD_WITHOUT_MULTIPLY;
 558     DALI_LOG_INFO(gTextureManagerLogFilter, Debug::General, "TextureManager::RequestLoad( url=%s observer=%p ) Using cached texture id@%d, textureId=%d, maskTextureId=%d, prevTextureId=%d, frameindex=%d, premultiplied=%d, refCount=%d\n", url.GetUrl().c_str(), observer, cacheIndex.GetIndex(), textureId, maskTextureId, previousTextureId, frameIndex, mTextureCacheManager[cacheIndex].preMultiplied ? 1 : 0, static_cast<int>(mTextureCacheManager[cacheIndex].referenceCount));
 559   }
 560
 561   if(textureId == INVALID_TEXTURE_ID) // There was no caching, or caching not required
 562   {
 563     textureId = mTextureCacheManager.GenerateTextureId();
 564
 565     bool preMultiply = (preMultiplyOnLoad == TextureManager::MultiplyOnLoad::MULTIPLY_ON_LOAD);
 566
 567     // Cache new texutre, and get cacheIndex.
 568     cacheIndex = mTextureCacheManager.AppendCache(TextureInfo(textureId, maskTextureId, url, desiredSize, contentScale, fittingMode, samplingMode, false, cropToMask, textureHash, orientationCorrection, preMultiply, animatedImageLoading, frameIndex, loadYuvPlanes));
 569     DALI_LOG_INFO(gTextureManagerLogFilter, Debug::General, "TextureManager::RequestLoad( url=%s observer=%p ) New texture, cacheIndex:%d, textureId=%d, maskTextureId=%d, frameindex=%d premultiply=%d\n", url.GetUrl().c_str(), observer, cacheIndex.GetIndex(), textureId, maskTextureId, frameIndex, preMultiply);
 570   }
 571
 572   // The below code path is common whether we are using the cache or not.
 573   // The textureInfoIndex now refers to either a pre-existing cached TextureInfo,
 574   // or a new TextureInfo just created.
 575   TextureInfo& textureInfo(mTextureCacheManager[cacheIndex]);
 576   textureInfo.maskTextureId         = maskTextureId;
 577   textureInfo.storageType           = storageType;
 578   textureInfo.orientationCorrection = orientationCorrection;
 579
 580   // the case using external texture has already been loaded texture, so change its status to WAITING_FOR_MASK.
 581   if(url.GetProtocolType() == VisualUrl::TEXTURE)
 582   {
 583     if(textureInfo.loadState != TextureManager::LoadState::UPLOADED)
 584     {
 585       textureInfo.preMultiplied = (preMultiplyOnLoad == TextureManager::MultiplyOnLoad::MULTIPLY_ON_LOAD);
 586       textureInfo.loadState     = TextureManager::LoadState::WAITING_FOR_MASK;
 587     }
 588   }
 589
 590   DALI_LOG_INFO(gTextureManagerLogFilter, Debug::General, "TextureInfo loadState:%s\n", GET_LOAD_STATE_STRING(textureInfo.loadState));
 591
 592   // Force reloading of texture by setting loadState unless already loading or cancelled.
 593   if(TextureManager::ReloadPolicy::FORCED == reloadPolicy &&
 594      TextureManager::LoadState::LOADING != textureInfo.loadState &&
 595      TextureManager::LoadState::WAITING_FOR_MASK != textureInfo.loadState &&
 596      TextureManager::LoadState::MASK_APPLYING != textureInfo.loadState &&
 597      TextureManager::LoadState::MASK_APPLIED != textureInfo.loadState &&
 598      TextureManager::LoadState::CANCELLED != textureInfo.loadState &&
 599      TextureManager::LoadState::MASK_CANCELLED != textureInfo.loadState)
 600   {
 601     DALI_LOG_INFO(gTextureManagerLogFilter, Debug::Verbose, "TextureManager::RequestLoad( url=%s observer=%p ) ForcedReload cacheIndex:%d, textureId=%d, maskTextureId=%d, prevTextureId=%d\n", url.GetUrl().c_str(), observer, cacheIndex.GetIndex(), textureId, maskTextureId, previousTextureId);
 602     textureInfo.loadState = TextureManager::LoadState::NOT_STARTED;
 603   }
 604
 605   if(!synchronousLoading)
 606   {
 607     // Check if we should add the observer.
 608     // Only do this if we have not loaded yet and it will not have loaded by the end of this method.
 609     switch(textureInfo.loadState)
 610     {
 611       case TextureManager::LoadState::LOAD_FAILED: // Failed notifies observer which then stops observing.
 612       case TextureManager::LoadState::NOT_STARTED:
 613       {
 614         LoadOrQueueTexture(textureInfo, observer); // If called inside NotifyObservers, queues until afterwards
 615         break;
 616       }
 617       case TextureManager::LoadState::LOADING:
 618       case TextureManager::LoadState::WAITING_FOR_MASK:
 619       case TextureManager::LoadState::MASK_APPLYING:
 620       case TextureManager::LoadState::MASK_APPLIED:
 621       {
 622         // Do not observe even we reload forced when texture is already loading state.
 623         if(TextureManager::ReloadPolicy::CACHED == reloadPolicy || TextureManager::INVALID_TEXTURE_ID == previousTextureId)
 624         {
 625           ObserveTexture(textureInfo, observer);
 626         }
 627         break;
 628       }
 629       case TextureManager::LoadState::UPLOADED:
 630       {
 631         if(observer)
 632         {
 633           LoadOrQueueTexture(textureInfo, observer);
 634         }
 635         break;
 636       }
 637       case TextureManager::LoadState::CANCELLED:
 638       {
 639         // A cancelled texture hasn't finished loading yet. Treat as a loading texture
 640         // (it's ref count has already been incremented, above)
 641         textureInfo.loadState = TextureManager::LoadState::LOADING;
 642         ObserveTexture(textureInfo, observer);
 643         break;
 644       }
 645       case TextureManager::LoadState::MASK_CANCELLED:
 646       {
 647         // A cancelled texture hasn't finished mask applying yet. Treat as a mask applying texture
 648         // (it's ref count has already been incremented, above)
 649         textureInfo.loadState = TextureManager::LoadState::MASK_APPLYING;
 650         ObserveTexture(textureInfo, observer);
 651         break;
 652       }
 653       case TextureManager::LoadState::LOAD_FINISHED:
 654       {
 655         // Loading has already completed.
 656         if(observer && textureInfo.storageType == TextureManager::StorageType::RETURN_PIXEL_BUFFER)
 657         {
 658           LoadOrQueueTexture(textureInfo, observer);
 659         }
 660         break;
 661       }
 662     }
 663   }
 664   else
 665   {
 666     // If the image is already finished to load, use cached texture.
 667     // We don't need to consider Observer because this is synchronous loading.
 668     if(!(textureInfo.loadState == TextureManager::LoadState::UPLOADED ||
 669          textureInfo.loadState == TextureManager::LoadState::LOAD_FINISHED))
 670     {
 671       if(url.GetProtocolType() == VisualUrl::TEXTURE)
 672       {
 673         // Get external textureSet from cacheManager.
 674         std::string location = textureInfo.url.GetLocation();
 675         if(!location.empty())
 676         {
 677           TextureId id                  = std::stoi(location);
 678           auto      externalTextureInfo = mTextureCacheManager.GetExternalTextureInfo(id);
 679           textureInfo.textures.push_back(externalTextureInfo.textureSet.GetTexture(0));
 680           textureInfo.loadState = TextureManager::LoadState::UPLOADED;
 681         }
 682       }
 683       else
 684       {
 685         std::vector<Devel::PixelBuffer> pixelBuffers;
 686         LoadImageSynchronously(url, desiredSize, fittingMode, samplingMode, orientationCorrection, loadYuvPlanes, pixelBuffers);
 687
 688         if(pixelBuffers.empty())
 689         {
 690           // If pixelBuffer loading is failed in synchronously, call RequestRemove() method.
 691           RequestRemove(textureId, nullptr);
 692           return INVALID_TEXTURE_ID;
 693         }
 694
 695         if(storageType == TextureManager::StorageType::KEEP_PIXEL_BUFFER) // For the mask image loading.
 696         {
 697           textureInfo.pixelBuffer = pixelBuffers[0]; // Store the pixel data
 698           textureInfo.loadState   = TextureManager::LoadState::LOAD_FINISHED;
 699         }
 700         else // For the image loading.
 701         {
 702           Texture maskTexture;
 703           if(maskTextureId != INVALID_TEXTURE_ID)
 704           {
 705             TextureCacheIndex maskCacheIndex = mTextureCacheManager.GetCacheIndexFromId(maskTextureId);
 706             if(maskCacheIndex != INVALID_CACHE_INDEX)
 707             {
 708               if(mTextureCacheManager[maskCacheIndex].storageType == TextureManager::StorageType::KEEP_PIXEL_BUFFER)
 709               {
 710                 Devel::PixelBuffer maskPixelBuffer = mTextureCacheManager[maskCacheIndex].pixelBuffer;
 711                 if(maskPixelBuffer)
 712                 {
 713                   pixelBuffers[0].ApplyMask(maskPixelBuffer, contentScale, cropToMask);
 714                 }
 715                 else
 716                 {
 717                   DALI_LOG_ERROR("Mask image cached invalid pixel buffer!\n");
 718                 }
 719               }
 720             }
 721             else
 722             {
 723               DALI_LOG_ERROR("Mask image is not stored in cache.\n");
 724             }
 725           }
 726           PreMultiply(pixelBuffers[0], preMultiplyOnLoad);
 727
 728           // Upload texture
 729           UploadTextures(pixelBuffers, textureInfo);
 730         }
 731       }
 732     }
 733   }
 734
 735   return textureId;
 736 }
 737
 738 void TextureManager::RequestRemove(const TextureManager::TextureId textureId, TextureUploadObserver* observer)
 739 {
 740   DALI_LOG_INFO(gTextureManagerLogFilter, Debug::General, "TextureManager::RequestRemove( textureId=%d observer=%p )\n", textureId, observer);
 741
 742   // Queue to remove.
 743   if(textureId != INVALID_TEXTURE_ID)
 744   {
 745     TextureCacheIndex textureCacheIndex = mTextureCacheManager.GetCacheIndexFromId(textureId);
 746     if(textureCacheIndex != INVALID_CACHE_INDEX)
 747     {
 748       if(observer)
 749       {
 750         // Remove observer from cached texture info
 751         TextureInfo& textureInfo(mTextureCacheManager[textureCacheIndex]);
 752         RemoveTextureObserver(textureInfo, observer);
 753       }
 754
 755       mRemoveQueue.PushBack(textureId);
 756
 757       if(!mRemoveProcessorRegistered && Adaptor::IsAvailable())
 758       {
 759         mRemoveProcessorRegistered = true;
 760         Adaptor::Get().RegisterProcessor(*this, true);
 761       }
 762     }
 763   }
 764 }
 765
 766 void TextureManager::Remove(const TextureManager::TextureId textureId)
 767 {
 768   if(textureId != INVALID_TEXTURE_ID)
 769   {
 770     TextureCacheIndex textureCacheIndex = mTextureCacheManager.GetCacheIndexFromId(textureId);
 771     if(textureCacheIndex != INVALID_CACHE_INDEX)
 772     {
 773       TextureManager::TextureId maskTextureId = INVALID_TEXTURE_ID;
 774       TextureInfo&              textureInfo(mTextureCacheManager[textureCacheIndex]);
 775       // We only need to consider maskTextureId when texture's loadState is not cancelled. Because it is already deleted.
 776       if(textureInfo.loadState != TextureManager::LoadState::CANCELLED && textureInfo.loadState != TextureManager::LoadState::MASK_CANCELLED)
 777       {
 778         if(textureInfo.maskTextureId != INVALID_TEXTURE_ID)
 779         {
 780           maskTextureId = textureInfo.maskTextureId;
 781         }
 782       }
 783
 784       DALI_LOG_INFO(gTextureManagerLogFilter, Debug::General, "TextureManager::Remove( textureId=%d ) cacheIndex:%d removal maskTextureId=%d, loadState=%s\n", textureId, textureCacheIndex.GetIndex(), maskTextureId, GET_LOAD_STATE_STRING(textureInfo.loadState));
 785
 786       // Remove textureId in CacheManager. Now, textureInfo is invalidate.
 787       mTextureCacheManager.RemoveCache(textureInfo);
 788
 789       // Remove maskTextureId in CacheManager
 790       if(maskTextureId != INVALID_TEXTURE_ID)
 791       {
 792         TextureCacheIndex maskCacheIndex = mTextureCacheManager.GetCacheIndexFromId(maskTextureId);
 793         if(maskCacheIndex != INVALID_CACHE_INDEX)
 794         {
 795           TextureInfo& maskTextureInfo(mTextureCacheManager[maskCacheIndex]);
 796
 797           DALI_LOG_INFO(gTextureManagerLogFilter, Debug::General, "TextureManager::Remove mask texture( maskTextureId=%d ) cacheIndex:%d, loadState=%s\n", maskTextureId, maskCacheIndex.GetIndex(), GET_LOAD_STATE_STRING(maskTextureInfo.loadState));
 798
 799           mTextureCacheManager.RemoveCache(maskTextureInfo);
 800         }
 801       }
 802     }
 803   }
 804 }
 805
 806 void TextureManager::ProcessRemoveQueue()
 807 {
 808   DALI_TRACE_BEGIN_WITH_MESSAGE_GENERATOR(gTraceFilter, "DALI_TEXTURE_MANAGER_PROCESS_REMOVE_QUEUE", [&](std::ostringstream& oss) {
 809     oss << "[" << mRemoveQueue.Count() << "]";
 810   });
 811
 812   // Note that RemoveQueue is not be changed during Remove().
 813   for(auto&& textureId : mRemoveQueue)
 814   {
 815     if(textureId != INVALID_TEXTURE_ID)
 816     {
 817       Remove(textureId);
 818     }
 819   }
 820
 821   mRemoveQueue.Clear();
 822
 823   DALI_TRACE_END(gTraceFilter, "DALI_TEXTURE_MANAGER_PROCESS_REMOVE_QUEUE");
 824 }
 825
 826 void TextureManager::Process(bool postProcessor)
 827 {
 828   DALI_LOG_INFO(gTextureManagerLogFilter, Debug::General, "TextureManager::Process()\n");
 829
 830   ProcessRemoveQueue();
 831
 832   if(Adaptor::IsAvailable())
 833   {
 834     Adaptor::Get().UnregisterProcessor(*this, true);
 835     mRemoveProcessorRegistered = false;
 836   }
 837 }
 838
 839 void TextureManager::LoadImageSynchronously(
 840   const VisualUrl&                 url,
 841   const Dali::ImageDimensions&     desiredSize,
 842   const Dali::FittingMode::Type    fittingMode,
 843   const Dali::SamplingMode::Type   samplingMode,
 844   const bool                       orientationCorrection,
 845   const bool                       loadYuvPlanes,
 846   std::vector<Devel::PixelBuffer>& pixelBuffers)
 847 {
 848   Devel::PixelBuffer pixelBuffer;
 849   if(url.IsBufferResource())
 850   {
 851     const EncodedImageBuffer& encodedImageBuffer = mTextureCacheManager.GetEncodedImageBuffer(url);
 852     if(encodedImageBuffer)
 853     {
 854       pixelBuffer = LoadImageFromBuffer(encodedImageBuffer.GetRawBuffer(), desiredSize, fittingMode, samplingMode, orientationCorrection);
 855     }
 856   }
 857   else
 858   {
 859     if(loadYuvPlanes)
 860     {
 861       Dali::LoadImagePlanesFromFile(url.GetUrl(), pixelBuffers, desiredSize, fittingMode, samplingMode, orientationCorrection);
 862     }
 863     else
 864     {
 865       pixelBuffer = Dali::LoadImageFromFile(url.GetUrl(), desiredSize, fittingMode, samplingMode, orientationCorrection);
 866     }
 867   }
 868
 869   if(pixelBuffer)
 870   {
 871     pixelBuffers.push_back(pixelBuffer);
 872   }
 873 }
 874
 875 void TextureManager::AddObserver(TextureManager::LifecycleObserver& observer)
 876 {
 877   // make sure an observer doesn't observe the same object twice
 878   // otherwise it will get multiple calls to ObjectDestroyed()
 879   DALI_ASSERT_DEBUG(mLifecycleObservers.End() == std::find(mLifecycleObservers.Begin(), mLifecycleObservers.End(), &observer));
 880   mLifecycleObservers.PushBack(&observer);
 881 }
 882
 883 void TextureManager::RemoveObserver(TextureManager::LifecycleObserver& observer)
 884 {
 885   // Find the observer...
 886   auto endIter = mLifecycleObservers.End();
 887   for(auto iter = mLifecycleObservers.Begin(); iter != endIter; ++iter)
 888   {
 889     if((*iter) == &observer)
 890     {
 891       mLifecycleObservers.Erase(iter);
 892       break;
 893     }
 894   }
 895   DALI_ASSERT_DEBUG(endIter != mLifecycleObservers.End());
 896 }
 897
 898 void TextureManager::LoadOrQueueTexture(TextureManager::TextureInfo& textureInfo, TextureUploadObserver* observer)
 899 {
 900   switch(textureInfo.loadState)
 901   {
 902     case TextureManager::LoadState::NOT_STARTED:
 903     case TextureManager::LoadState::LOAD_FAILED:
 904     {
 905       if(mLoadingQueueTextureId != INVALID_TEXTURE_ID)
 906       {
 907         QueueLoadTexture(textureInfo, observer);
 908       }
 909       else
 910       {
 911         LoadTexture(textureInfo, observer);
 912       }
 913       break;
 914     }
 915     case TextureManager::LoadState::UPLOADED:
 916     {
 917       if(mLoadingQueueTextureId != INVALID_TEXTURE_ID)
 918       {
 919         QueueLoadTexture(textureInfo, observer);
 920       }
 921       else
 922       {
 923         // The Texture has already loaded. The other observers have already been notified.
 924         // We need to send a "late" loaded notification for this observer.
 925         if(observer)
 926         {
 927           EmitLoadComplete(observer, textureInfo, true);
 928         }
 929       }
 930       break;
 931     }
 932     case TextureManager::LoadState::LOADING:
 933     case TextureManager::LoadState::CANCELLED:
 934     case TextureManager::LoadState::MASK_CANCELLED:
 935     case TextureManager::LoadState::LOAD_FINISHED:
 936     case TextureManager::LoadState::WAITING_FOR_MASK:
 937     case TextureManager::LoadState::MASK_APPLYING:
 938     case TextureManager::LoadState::MASK_APPLIED:
 939     {
 940       break;
 941     }
 942   }
 943 }
 944
 945 void TextureManager::QueueLoadTexture(const TextureManager::TextureInfo& textureInfo, TextureUploadObserver* observer)
 946 {
 947   DALI_LOG_INFO(gTextureManagerLogFilter, Debug::Verbose, "Add observer to observer queue (textureId:%d, observer:%p)\n", textureInfo.textureId, observer);
 948
 949   const auto& textureId = textureInfo.textureId;
 950   mLoadQueue.PushBack(QueueElement(textureId, observer));
 951
 952   if(observer)
 953   {
 954     DALI_LOG_INFO(gTextureManagerLogFilter, Debug::Verbose, "  Connect DestructionSignal to observer:%p\n", observer);
 955     observer->DestructionSignal().Connect(this, &TextureManager::ObserverDestroyed);
 956   }
 957 }
 958
 959 void TextureManager::LoadTexture(TextureManager::TextureInfo& textureInfo, TextureUploadObserver* observer)
 960 {
 961   DALI_LOG_INFO(gTextureManagerLogFilter, Debug::Concise, "TextureManager::LoadTexture(): url:%s sync:%s\n", textureInfo.url.GetUrl().c_str(), textureInfo.loadSynchronously ? "T" : "F");
 962   textureInfo.loadState = TextureManager::LoadState::LOADING;
 963   if(!textureInfo.loadSynchronously)
 964   {
 965     auto premultiplyOnLoad = (textureInfo.preMultiplyOnLoad && textureInfo.maskTextureId == INVALID_TEXTURE_ID) ? DevelAsyncImageLoader::PreMultiplyOnLoad::ON : DevelAsyncImageLoader::PreMultiplyOnLoad::OFF;
 966     if(textureInfo.animatedImageLoading)
 967     {
 968       mAsyncLoader->LoadAnimatedImage(textureInfo.textureId, textureInfo.animatedImageLoading, textureInfo.frameIndex, textureInfo.desiredSize, textureInfo.fittingMode, textureInfo.samplingMode, premultiplyOnLoad);
 969     }
 970     else
 971     {
 972       mAsyncLoader->Load(textureInfo.textureId, textureInfo.url, textureInfo.desiredSize, textureInfo.fittingMode, textureInfo.samplingMode, textureInfo.orientationCorrection, premultiplyOnLoad, textureInfo.loadYuvPlanes);
 973     }
 974   }
 975   ObserveTexture(textureInfo, observer);
 976 }
 977
 978 void TextureManager::ProcessLoadQueue()
 979 {
 980   for(auto&& element : mLoadQueue)
 981   {
 982     if(element.mTextureId == INVALID_TEXTURE_ID)
 983     {
 984       continue;
 985     }
 986
 987     TextureCacheIndex cacheIndex = mTextureCacheManager.GetCacheIndexFromId(element.mTextureId);
 988     if(cacheIndex != INVALID_CACHE_INDEX)
 989     {
 990       TextureInfo& textureInfo(mTextureCacheManager[cacheIndex]);
 991
 992       DALI_LOG_INFO(gTextureManagerLogFilter, Debug::General, "TextureManager::ProcessLoadQueue() textureId=%d, observer=%p, cacheIndex=@%d, loadState:%s\n", element.mTextureId, element.mObserver, cacheIndex.GetIndex(), GET_LOAD_STATE_STRING(textureInfo.loadState));
 993
 994       if((textureInfo.loadState == TextureManager::LoadState::UPLOADED) ||
 995          (textureInfo.loadState == TextureManager::LoadState::LOAD_FINISHED &&
 996           textureInfo.storageType == TextureManager::StorageType::RETURN_PIXEL_BUFFER))
 997       {
 998         if(element.mObserver)
 999         {
1000           DALI_LOG_INFO(gTextureManagerLogFilter, Debug::Verbose, "  Disconnect DestructionSignal to observer:%p\n", element.mObserver);
1001           element.mObserver->DestructionSignal().Disconnect(this, &TextureManager::ObserverDestroyed);
1002
1003           EmitLoadComplete(element.mObserver, textureInfo, true);
1004         }
1005       }
1006       else if(textureInfo.loadState == TextureManager::LoadState::LOADING)
1007       {
1008         // Note : LOADING state texture cannot be queue.
1009         // This case be occured when same texture id are queue in mLoadQueue.
1010         ObserveTexture(textureInfo, element.mObserver);
1011       }
1012       else
1013       {
1014         LoadTexture(textureInfo, element.mObserver);
1015       }
1016     }
1017   }
1018
1019   mLoadQueue.Clear();
1020 }
1021
1022 void TextureManager::ObserveTexture(TextureManager::TextureInfo& textureInfo,
1023                                     TextureUploadObserver*       observer)
1024 {
1025   DALI_LOG_INFO(gTextureManagerLogFilter, Debug::Concise, "TextureManager::ObserveTexture(): url:%s observer:%p\n", textureInfo.url.GetUrl().c_str(), observer);
1026
1027   if(observer)
1028   {
1029     textureInfo.observerList.PushBack(observer);
1030
1031     DALI_LOG_INFO(gTextureManagerLogFilter, Debug::Verbose, "  Connect DestructionSignal to observer:%p\n", observer);
1032     observer->DestructionSignal().Connect(this, &TextureManager::ObserverDestroyed);
1033   }
1034 }
1035
1036 void TextureManager::AsyncLoadComplete(const TextureManager::TextureId textureId, std::vector<Devel::PixelBuffer>& pixelBuffers)
1037 {
1038   TextureCacheIndex cacheIndex = mTextureCacheManager.GetCacheIndexFromId(textureId);
1039   DALI_LOG_INFO(gTextureManagerLogFilter, Debug::Concise, "TextureManager::AsyncLoadComplete( textureId:%d CacheIndex:%d )\n", textureId, cacheIndex.GetIndex());
1040   if(cacheIndex != INVALID_CACHE_INDEX)
1041   {
1042     TextureInfo& textureInfo(mTextureCacheManager[cacheIndex]);
1043
1044     DALI_LOG_INFO(gTextureManagerLogFilter, Debug::Concise, "  textureId:%d Url:%s CacheIndex:%d LoadState: %s\n", textureInfo.textureId, textureInfo.url.GetUrl().c_str(), cacheIndex.GetIndex(), GET_LOAD_STATE_STRING(textureInfo.loadState));
1045     if(textureInfo.loadState != TextureManager::LoadState::CANCELLED && textureInfo.loadState != TextureManager::LoadState::MASK_CANCELLED)
1046     {
1047       // textureInfo can be invalidated after this call (as the mTextureInfoContainer may be modified)
1048       PostLoad(textureInfo, pixelBuffers);
1049     }
1050     else
1051     {
1052       Remove(textureInfo.textureId);
1053     }
1054   }
1055 }
1056
1057 void TextureManager::PostLoad(TextureManager::TextureInfo& textureInfo, std::vector<Devel::PixelBuffer>& pixelBuffers)
1058 {
1059   if(!pixelBuffers.empty()) ///< Load success
1060   {
1061     if(pixelBuffers.size() == 1)
1062     {
1063       Devel::PixelBuffer pixelBuffer = pixelBuffers[0];
1064       if(pixelBuffer && (pixelBuffer.GetWidth() != 0) && (pixelBuffer.GetHeight() != 0))
1065       {
1066         textureInfo.preMultiplied = pixelBuffer.IsAlphaPreMultiplied();
1067
1068         if(textureInfo.storageType == TextureManager::StorageType::UPLOAD_TO_TEXTURE)
1069         {
1070           // If there is a mask texture ID associated with this texture, then apply the mask
1071           // if it's already loaded. If it hasn't, and the mask is still loading,
1072           // wait for the mask to finish loading.
1073           // note, If the texture is already uploaded synchronously during loading,
1074           // we don't need to apply mask.
1075           if(textureInfo.loadState != TextureManager::LoadState::UPLOADED &&
1076              textureInfo.maskTextureId != INVALID_TEXTURE_ID)
1077           {
1078             if(textureInfo.loadState == TextureManager::LoadState::MASK_APPLYING)
1079             {
1080               textureInfo.loadState = TextureManager::LoadState::MASK_APPLIED;
1081               UploadTextures(pixelBuffers, textureInfo);
1082               NotifyObservers(textureInfo, true);
1083             }
1084             else
1085             {
1086               LoadState maskLoadState = mTextureCacheManager.GetTextureStateInternal(textureInfo.maskTextureId);
1087               textureInfo.pixelBuffer = pixelBuffer; // Store the pixel buffer temporarily
1088               if(maskLoadState == TextureManager::LoadState::LOADING)
1089               {
1090                 textureInfo.loadState = TextureManager::LoadState::WAITING_FOR_MASK;
1091               }
1092               else if(maskLoadState == TextureManager::LoadState::LOAD_FINISHED || maskLoadState == TextureManager::LoadState::UPLOADED)
1093               {
1094                 TextureCacheIndex maskCacheIndex = mTextureCacheManager.GetCacheIndexFromId(textureInfo.maskTextureId);
1095                 if(maskCacheIndex != INVALID_CACHE_INDEX)
1096                 {
1097                   TextureInfo& maskTextureInfo(mTextureCacheManager[maskCacheIndex]);
1098                   if(maskTextureInfo.storageType == TextureManager::StorageType::KEEP_PIXEL_BUFFER)
1099                   {
1100                     ApplyMask(textureInfo, textureInfo.maskTextureId);
1101                   }
1102                   else if(maskTextureInfo.storageType == TextureManager::StorageType::KEEP_TEXTURE)
1103                   {
1104                     // Upload image texture. textureInfo.loadState will be UPLOADED.
1105                     UploadTextures(pixelBuffers, textureInfo);
1106
1107                     // notify mask texture set.
1108                     NotifyObservers(textureInfo, true);
1109                   }
1110                 }
1111               }
1112               else // maskLoadState == TextureManager::LoadState::LOAD_FAILED
1113               {
1114                 // Url texture load success, But alpha mask texture load failed. Run as normal image upload.
1115                 DALI_LOG_ERROR("Alpha mask image loading failed! Image will not be masked\n");
1116                 UploadTextures(pixelBuffers, textureInfo);
1117                 NotifyObservers(textureInfo, true);
1118               }
1119             }
1120           }
1121           else
1122           {
1123             UploadTextures(pixelBuffers, textureInfo);
1124             NotifyObservers(textureInfo, true);
1125           }
1126         }
1127         else
1128         {
1129           textureInfo.pixelBuffer = pixelBuffer; // Store the pixel data
1130           textureInfo.loadState   = TextureManager::LoadState::LOAD_FINISHED;
1131
1132           if(textureInfo.storageType == TextureManager::StorageType::RETURN_PIXEL_BUFFER)
1133           {
1134             NotifyObservers(textureInfo, true);
1135           }
1136           else // for the TextureManager::StorageType::KEEP_PIXEL_BUFFER and TextureManager::StorageType::KEEP_TEXTURE
1137           {
1138             // Check if there was another texture waiting for this load to complete
1139             // (e.g. if this was an image mask, and its load is on a different thread)
1140             CheckForWaitingTexture(textureInfo);
1141           }
1142         }
1143       }
1144     }
1145     else
1146     {
1147       // YUV case
1148       textureInfo.preMultiplied = false;
1149
1150       UploadTextures(pixelBuffers, textureInfo);
1151       NotifyObservers(textureInfo, true);
1152     }
1153   }
1154   else ///< Load fail
1155   {
1156     textureInfo.loadState = TextureManager::LoadState::LOAD_FAILED;
1157     if(textureInfo.storageType == TextureManager::StorageType::KEEP_PIXEL_BUFFER || textureInfo.storageType == TextureManager::StorageType::KEEP_TEXTURE)
1158     {
1159       // Check if there was another texture waiting for this load to complete
1160       // (e.g. if this was an image mask, and its load is on a different thread)
1161       CheckForWaitingTexture(textureInfo);
1162     }
1163     else
1164     {
1165       NotifyObservers(textureInfo, false);
1166     }
1167   }
1168 }
1169
1170 void TextureManager::CheckForWaitingTexture(TextureManager::TextureInfo& maskTextureInfo)
1171 {
1172   if(maskTextureInfo.loadState == TextureManager::LoadState::LOAD_FINISHED &&
1173      maskTextureInfo.storageType == TextureManager::StorageType::KEEP_TEXTURE)
1174   {
1175     // Upload mask texture. textureInfo.loadState will be UPLOADED.
1176     std::vector<Devel::PixelBuffer> pixelBuffers;
1177     pixelBuffers.push_back(maskTextureInfo.pixelBuffer);
1178     UploadTextures(pixelBuffers, maskTextureInfo);
1179   }
1180
1181   DALI_LOG_INFO(gTextureManagerLogFilter, Debug::Concise, "TextureManager::CheckForWaitingTexture(): maskTextureId=%d, maskTextureUrl=%s\n", maskTextureInfo.textureId, maskTextureInfo.url.GetUrl().c_str());
1182
1183   // Search the cache, checking if any texture has this texture id as a maskTextureId
1184   const size_t size = mTextureCacheManager.size();
1185
1186   // Keep notify observer required textureIds.
1187   // Note : NotifyObservers can change mTextureCacheManager cache struct. We should check id's validation before notify.
1188   std::vector<TextureId> notifyRequiredTextureIds;
1189
1190   // TODO : Refactorize here to not iterate whole cached image.
1191   for(TextureCacheIndex cacheIndex = TextureCacheIndex(TextureManagerType::TEXTURE_CACHE_INDEX_TYPE_LOCAL, 0u); cacheIndex.GetIndex() < size; ++cacheIndex.detailValue.index)
1192   {
1193     if(mTextureCacheManager[cacheIndex].maskTextureId == maskTextureInfo.textureId &&
1194        mTextureCacheManager[cacheIndex].loadState == TextureManager::LoadState::WAITING_FOR_MASK)
1195     {
1196       TextureInfo& textureInfo(mTextureCacheManager[cacheIndex]);
1197
1198       if(maskTextureInfo.loadState == TextureManager::LoadState::LOAD_FINISHED)
1199       {
1200         if(maskTextureInfo.storageType == TextureManager::StorageType::KEEP_PIXEL_BUFFER)
1201         {
1202           ApplyMask(textureInfo, maskTextureInfo.textureId);
1203         }
1204       }
1205       else if(maskTextureInfo.loadState == TextureManager::LoadState::UPLOADED)
1206       {
1207         if(maskTextureInfo.storageType == TextureManager::StorageType::KEEP_TEXTURE)
1208         {
1209           if(textureInfo.url.GetProtocolType() == VisualUrl::TEXTURE)
1210           {
1211             // Get external textureSet from cacheManager.
1212             std::string location = textureInfo.url.GetLocation();
1213             if(!location.empty())
1214             {
1215               TextureId id                  = std::stoi(location);
1216               auto      externalTextureInfo = mTextureCacheManager.GetExternalTextureInfo(id);
1217               textureInfo.textures.push_back(externalTextureInfo.textureSet.GetTexture(0));
1218               textureInfo.loadState = TextureManager::LoadState::UPLOADED;
1219             }
1220           }
1221           else
1222           {
1223             // Upload image texture. textureInfo.loadState will be UPLOADED.
1224             std::vector<Devel::PixelBuffer> pixelBuffers;
1225             pixelBuffers.push_back(textureInfo.pixelBuffer);
1226             UploadTextures(pixelBuffers, textureInfo);
1227           }
1228
1229           // Increase reference counts for notify required textureId.
1230           // Now we can assume that we don't remove & re-assign this textureId
1231           // during NotifyObserver signal emit.
1232           maskTextureInfo.referenceCount++;
1233           textureInfo.referenceCount++;
1234
1235           DALI_LOG_INFO(gTextureManagerLogFilter, Debug::Concise, "TextureManager::CheckForWaitingTexture(): Ready to notify textureId=%d\n", textureInfo.textureId);
1236
1237           notifyRequiredTextureIds.push_back(textureInfo.textureId);
1238         }
1239       }
1240       else // maskTextureInfo.loadState == TextureManager::LoadState::LOAD_FAILED
1241       {
1242         // Url texture load success, But alpha mask texture load failed. Run as normal image upload.
1243         DALI_LOG_ERROR("Alpha mask image loading failed! Image will not be masked\n");
1244         std::vector<Devel::PixelBuffer> pixelBuffers;
1245         pixelBuffers.push_back(textureInfo.pixelBuffer);
1246         UploadTextures(pixelBuffers, textureInfo);
1247
1248         // Increase reference counts for notify required textureId.
1249         // Now we can assume that we don't remove & re-assign this textureId
1250         // during NotifyObserver signal emit.
1251         maskTextureInfo.referenceCount++;
1252         textureInfo.referenceCount++;
1253
1254         DALI_LOG_INFO(gTextureManagerLogFilter, Debug::Concise, "TextureManager::CheckForWaitingTexture(): Ready to notify textureId=%d\n", textureInfo.textureId);
1255
1256         notifyRequiredTextureIds.push_back(textureInfo.textureId);
1257       }
1258     }
1259   }
1260
1261   // Notify textures are masked
1262   for(const auto textureId : notifyRequiredTextureIds)
1263   {
1264     TextureCacheIndex textureCacheIndex = mTextureCacheManager.GetCacheIndexFromId(textureId);
1265     if(textureCacheIndex != INVALID_CACHE_INDEX)
1266     {
1267       TextureInfo& textureInfo(mTextureCacheManager[textureCacheIndex]);
1268       NotifyObservers(textureInfo, true);
1269     }
1270   }
1271
1272   // Decrease reference count
1273   for(const auto textureId : notifyRequiredTextureIds)
1274   {
1275     RequestRemove(textureId, nullptr);
1276   }
1277 }
1278
1279 void TextureManager::ApplyMask(TextureManager::TextureInfo& textureInfo, const TextureManager::TextureId maskTextureId)
1280 {
1281   TextureCacheIndex maskCacheIndex = mTextureCacheManager.GetCacheIndexFromId(maskTextureId);
1282   if(maskCacheIndex != INVALID_CACHE_INDEX)
1283   {
1284     Devel::PixelBuffer maskPixelBuffer = mTextureCacheManager[maskCacheIndex].pixelBuffer;
1285     Devel::PixelBuffer pixelBuffer     = textureInfo.pixelBuffer;
1286     textureInfo.pixelBuffer.Reset();
1287
1288     DALI_LOG_INFO(gTextureManagerLogFilter, Debug::Concise, "TextureManager::ApplyMask(): url:%s sync:%s\n", textureInfo.url.GetUrl().c_str(), textureInfo.loadSynchronously ? "T" : "F");
1289
1290     textureInfo.loadState  = TextureManager::LoadState::MASK_APPLYING;
1291     auto premultiplyOnLoad = textureInfo.preMultiplyOnLoad ? DevelAsyncImageLoader::PreMultiplyOnLoad::ON : DevelAsyncImageLoader::PreMultiplyOnLoad::OFF;
1292     mAsyncLoader->ApplyMask(textureInfo.textureId, pixelBuffer, maskPixelBuffer, textureInfo.scaleFactor, textureInfo.cropToMask, premultiplyOnLoad);
1293   }
1294 }
1295
1296 void TextureManager::UploadTextures(std::vector<Devel::PixelBuffer>& pixelBuffers, TextureManager::TextureInfo& textureInfo)
1297 {
1298   if(!pixelBuffers.empty() && textureInfo.loadState != TextureManager::LoadState::UPLOADED)
1299   {
1300     DALI_LOG_INFO(gTextureManagerLogFilter, Debug::General, "  TextureManager::UploadTextures() New Texture for textureId:%d\n", textureInfo.textureId);
1301
1302     // Check if this pixelBuffer is premultiplied
1303     textureInfo.preMultiplied = pixelBuffers[0].IsAlphaPreMultiplied();
1304
1305     auto& renderingAddOn = RenderingAddOn::Get();
1306     if(renderingAddOn.IsValid())
1307     {
1308       renderingAddOn.CreateGeometry(textureInfo.textureId, pixelBuffers[0]);
1309     }
1310
1311     // Remove previous textures and insert new textures
1312     textureInfo.textures.clear();
1313
1314     for(auto&& pixelBuffer : pixelBuffers)
1315     {
1316       Texture   texture   = Texture::New(Dali::TextureType::TEXTURE_2D, pixelBuffer.GetPixelFormat(), pixelBuffer.GetWidth(), pixelBuffer.GetHeight());
1317       PixelData pixelData = Devel::PixelBuffer::Convert(pixelBuffer);
1318       texture.Upload(pixelData);
1319       textureInfo.textures.push_back(texture);
1320     }
1321   }
1322
1323   // Update the load state.
1324   // Note: This is regardless of success as we care about whether a
1325   // load attempt is in progress or not.  If unsuccessful, a broken
1326   // image is still loaded.
1327   textureInfo.loadState = TextureManager::LoadState::UPLOADED;
1328 }
1329
1330 void TextureManager::NotifyObservers(TextureManager::TextureInfo& textureInfo, const bool success)
1331 {
1332   TextureId textureId = textureInfo.textureId;
1333
1334   // If there is an observer: Notify the load is complete, whether successful or not,
1335   // and erase it from the list
1336   TextureInfo* info = &textureInfo;
1337
1338   if(info->animatedImageLoading)
1339   {
1340     // If loading failed, we don't need to get frameCount and frameInterval.
1341     if(success)
1342     {
1343       info->frameCount    = info->animatedImageLoading.GetImageCount();
1344       info->frameInterval = info->animatedImageLoading.GetFrameInterval(info->frameIndex);
1345     }
1346     info->animatedImageLoading.Reset();
1347   }
1348
1349   mLoadingQueueTextureId = textureId;
1350
1351   // Reverse observer list that we can pop_back the observer.
1352   std::reverse(info->observerList.Begin(), info->observerList.End());
1353
1354   while(info->observerList.Count())
1355   {
1356     TextureUploadObserver* observer = *(info->observerList.End() - 1u);
1357
1358     // During LoadComplete() a Control ResourceReady() signal is emitted.
1359     // During that signal the app may add remove /add Textures (e.g. via
1360     // ImageViews).
1361     // It is possible for observers to be removed from the observer list,
1362     // and it is also possible for the mTextureInfoContainer to be modified,
1363     // invalidating the reference to the textureInfo struct.
1364     // Texture load requests for the same URL are deferred until the end of this
1365     // method.
1366     DALI_LOG_INFO(gTextureManagerLogFilter, Debug::Concise, "TextureManager::NotifyObservers() observer:%p textureId:%d url:%s loadState:%s\n", observer, textureId, info->url.GetUrl().c_str(), GET_LOAD_STATE_STRING(info->loadState));
1367     // It is possible for the observer to be deleted.
1368     // Disconnect and remove the observer first.
1369     DALI_LOG_INFO(gTextureManagerLogFilter, Debug::Verbose, "  Disconnect DestructionSignal to observer:%p\n", observer);
1370     observer->DestructionSignal().Disconnect(this, &TextureManager::ObserverDestroyed);
1371
1372     info->observerList.Erase(info->observerList.End() - 1u);
1373
1374     EmitLoadComplete(observer, *info, success);
1375
1376     // Get the textureInfo from the container again as it may have been invalidated.
1377     TextureCacheIndex textureInfoIndex = mTextureCacheManager.GetCacheIndexFromId(textureId);
1378     if(textureInfoIndex == INVALID_CACHE_INDEX)
1379     {
1380       break; // texture has been removed - can stop.
1381     }
1382     info = &mTextureCacheManager[textureInfoIndex];
1383   }
1384
1385   mLoadingQueueTextureId = INVALID_TEXTURE_ID;
1386   ProcessLoadQueue();
1387
1388   if(info->storageType == TextureManager::StorageType::RETURN_PIXEL_BUFFER && info->observerList.Count() == 0)
1389   {
1390     RequestRemove(info->textureId, nullptr);
1391   }
1392 }
1393
1394 void TextureManager::ObserverDestroyed(TextureUploadObserver* observer)
1395 {
1396   DALI_LOG_INFO(gTextureManagerLogFilter, Debug::Verbose, "TextureManager::ObserverDestroyed() observer:%p\n", observer);
1397
1398   const std::size_t size = mTextureCacheManager.size();
1399   for(TextureCacheIndex cacheIndex = TextureCacheIndex(TextureManagerType::TEXTURE_CACHE_INDEX_TYPE_LOCAL, 0u); cacheIndex.GetIndex() < size; ++cacheIndex.detailValue.index)
1400   {
1401     TextureInfo& textureInfo(mTextureCacheManager[cacheIndex]);
1402     for(TextureInfo::ObserverListType::Iterator j = textureInfo.observerList.Begin();
1403         j != textureInfo.observerList.End();)
1404     {
1405       if(*j == observer)
1406       {
1407         j = textureInfo.observerList.Erase(j);
1408       }
1409       else
1410       {
1411         ++j;
1412       }
1413     }
1414   }
1415
1416   // Remove element from the LoadQueue
1417   for(auto&& element : mLoadQueue)
1418   {
1419     if(element.mObserver == observer)
1420     {
1421       DALI_LOG_INFO(gTextureManagerLogFilter, Debug::Verbose, "Remove observer from observer queue (textureId:%d, observer:%p)\n", element.mTextureId, element.mObserver);
1422       element.mTextureId = INVALID_TEXTURE_ID;
1423       element.mObserver  = nullptr;
1424     }
1425   }
1426 }
1427
1428 Dali::Geometry TextureManager::GetRenderGeometry(const TextureManager::TextureId textureId, uint32_t& frontElements, uint32_t& backElements)
1429 {
1430   return RenderingAddOn::Get().IsValid() ? RenderingAddOn::Get().GetGeometry(textureId, frontElements, backElements) : Geometry();
1431 }
1432
1433 void TextureManager::EmitLoadComplete(TextureUploadObserver* observer, TextureManager::TextureInfo& textureInfo, const bool success)
1434 {
1435   if(textureInfo.storageType == TextureManager::StorageType::RETURN_PIXEL_BUFFER)
1436   {
1437     observer->LoadComplete(success, TextureUploadObserver::TextureInformation(TextureUploadObserver::ReturnType::PIXEL_BUFFER, textureInfo.pixelBuffer, textureInfo.url.GetUrl(), textureInfo.preMultiplied));
1438   }
1439   else
1440   {
1441     TextureSet textureSet = GetTextureSet(textureInfo);
1442     if(textureInfo.isAnimatedImageFormat)
1443     {
1444       observer->LoadComplete(success, TextureUploadObserver::TextureInformation(TextureUploadObserver::ReturnType::ANIMATED_IMAGE_TEXTURE, textureInfo.textureId, textureSet, textureInfo.frameCount, textureInfo.frameInterval, textureInfo.preMultiplied));
1445     }
1446     else
1447     {
1448       observer->LoadComplete(success, TextureUploadObserver::TextureInformation(TextureUploadObserver::ReturnType::TEXTURE, textureInfo.textureId, textureSet, textureInfo.preMultiplied));
1449     }
1450   }
1451 }
1452
1453 TextureSet TextureManager::GetTextureSet(const TextureManager::TextureId textureId)
1454 {
1455   TextureSet                textureSet;
1456   TextureManager::LoadState loadState = mTextureCacheManager.GetTextureStateInternal(textureId);
1457   if(loadState == TextureManager::LoadState::UPLOADED)
1458   {
1459     TextureCacheIndex textureCacheIndex = mTextureCacheManager.GetCacheIndexFromId(textureId);
1460     if(textureCacheIndex != INVALID_CACHE_INDEX)
1461     {
1462       TextureInfo& textureInfo(mTextureCacheManager[textureCacheIndex]);
1463       textureSet = GetTextureSet(textureInfo);
1464     }
1465   }
1466   else
1467   {
1468     DALI_LOG_ERROR("GetTextureSet is failed. texture is not uploaded \n");
1469   }
1470   return textureSet;
1471 }
1472
1473 TextureSet TextureManager::GetTextureSet(const TextureManager::TextureInfo& textureInfo)
1474 {
1475   TextureSet textureSet;
1476
1477   // Always create new TextureSet here, so we don't share same TextureSets for multiple visuals.
1478   textureSet = TextureSet::New();
1479
1480   if(!textureInfo.textures.empty())
1481   {
1482     if(textureInfo.textures.size() > 1) // For YUV case
1483     {
1484       uint32_t index = 0u;
1485       for(auto&& texture : textureInfo.textures)
1486       {
1487         textureSet.SetTexture(index++, texture);
1488       }
1489     }
1490     else
1491     {
1492       textureSet.SetTexture(TEXTURE_INDEX, textureInfo.textures[0]);
1493       TextureCacheIndex maskCacheIndex = mTextureCacheManager.GetCacheIndexFromId(textureInfo.maskTextureId);
1494       if(maskCacheIndex != INVALID_CACHE_INDEX)
1495       {
1496         TextureInfo& maskTextureInfo(mTextureCacheManager[maskCacheIndex]);
1497         if(maskTextureInfo.storageType == TextureManager::StorageType::UPLOAD_TO_TEXTURE || maskTextureInfo.storageType == TextureManager::StorageType::KEEP_TEXTURE)
1498         {
1499           if(!maskTextureInfo.textures.empty())
1500           {
1501             textureSet.SetTexture(MASK_TEXTURE_INDEX, maskTextureInfo.textures[0]);
1502           }
1503         }
1504       }
1505     }
1506   }
1507   return textureSet;
1508 }
1509
1510 void TextureManager::RemoveTextureObserver(TextureManager::TextureInfo& textureInfo, TextureUploadObserver* observer)
1511 {
1512   if(observer)
1513   {
1514     const auto iterEnd = textureInfo.observerList.End();
1515     const auto iter    = std::find(textureInfo.observerList.Begin(), iterEnd, observer);
1516     if(iter != iterEnd)
1517     {
1518       // Disconnect and remove the observer.
1519       DALI_LOG_INFO(gTextureManagerLogFilter, Debug::Verbose, "  Disconnect DestructionSignal to observer:%p\n", observer);
1520       observer->DestructionSignal().Disconnect(this, &TextureManager::ObserverDestroyed);
1521       textureInfo.observerList.Erase(iter);
1522     }
1523     else
1524     {
1525       // Given textureId might exist at load queue.
1526       // Remove observer from the LoadQueue
1527       for(auto&& element : mLoadQueue)
1528       {
1529         if(element.mTextureId == textureInfo.textureId && element.mObserver == observer)
1530         {
1531           DALI_LOG_INFO(gTextureManagerLogFilter, Debug::Verbose, "Remove observer from observer queue (textureId:%d, observer:%p)\n", element.mTextureId, element.mObserver);
1532           DALI_LOG_INFO(gTextureManagerLogFilter, Debug::Verbose, "  Disconnect DestructionSignal to observer:%p\n", observer);
1533           observer->DestructionSignal().Disconnect(this, &TextureManager::ObserverDestroyed);
1534           element.mObserver = nullptr;
1535           break;
1536         }
1537       }
1538     }
1539   }
1540 }
1541
1542 } // namespace Internal
1543
1544 } // namespace Toolkit
1545
1546 } // namespace Dali